DNS problem

  • Thread starter Thread starter Raymond Geering
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Raymond Geering

Hello

While creating a vbs script to inventory the PCs in the network, I
encountered a strange problem. Trying to get information from
PC-08 resulted in getting information from PC-09 (if PC-08
isn't running).

Thus, I made further investigation and tried to ping PC-08
(which wasn't running at this time).

Ping PC-08 resulted in getting an answer from 192.168.26.104.
So I checked this IP in the DHCP server and found out that
this is the IP from PC-09.

The same problem also happens with some other "offline"
PC's, but not with all.

After checking the DNS forward looking zone, I noticed
that there's an entry for PC-08 (Host) with the IP
192.168.26.104 which simply is wrong (PC-09
also has this IP in the DNS server).

Shouldn't this be updated automatically? Or in other
words, what shall I do to resolve this problem?

Any help is very appreciated.

Kind regards
/Ray
 
Hello,

I was checking my Scope properties in the DHCP server.

Automatically update DHCP client information in DNS is activated
but the radio button is set to "Update DNS only if DHCP client
requests".

Should I simply change the setting to "Always update DNS" to
avoid the problem?

Kind regards
/Ray
 
Yes, change it to Always update. Do you have options 003, 006 and 015 set in
DHCP-server, Scope options?
Does DNS on your servernic(s) point to your server-IP *only*?

Marina
 
Marina Roos said:
Yes, change it to Always update.
Click to expand...

Ok, I'll do that.
Do you have options 003, 006 and 015 set in
DHCP-server, Scope options?
Click to expand...

I have 003 (Router), 006 (DNS Server -> both Servers [1]),
044 (Wins -> both Servers), 046 (Node Type) but not 015

Looks like I should add the domain name there...
Does DNS on your servernic(s) point to your server-IP *only*?
Click to expand...

You mean the setting in the TCP/IP properties for the DNS
server address?

No, the servernic of Server01 points to it's server-IP for
the prefered DNS server as well as to the other server
as alternate DNS server.

On server02, the prefered DNS server is server01. This
seems a bit wrong to me - but never touch a running system.

Best regards
/Ray

Foot notes:
[1] environment
server01, PDC, DNS, DHCP, acting as fileserver
server02, PDC, DNS, DHCP, acting as exchange server
Both servers have a global catalogue. Both server have
the same DNS/DHCP settings
 
Let the servernic point to its own DNS and get rid of the 2nd one.

Marina

Raymond Geering said:
Marina Roos said:
Yes, change it to Always update.
Click to expand...

Ok, I'll do that.
Do you have options 003, 006 and 015 set in
DHCP-server, Scope options?
Click to expand...

I have 003 (Router), 006 (DNS Server -> both Servers [1]),
044 (Wins -> both Servers), 046 (Node Type) but not 015

Looks like I should add the domain name there...
Does DNS on your servernic(s) point to your server-IP *only*?
Click to expand...

You mean the setting in the TCP/IP properties for the DNS
server address?

No, the servernic of Server01 points to it's server-IP for
the prefered DNS server as well as to the other server
as alternate DNS server.

On server02, the prefered DNS server is server01. This
seems a bit wrong to me - but never touch a running system.

Best regards
/Ray

Foot notes:
[1] environment
server01, PDC, DNS, DHCP, acting as fileserver
server02, PDC, DNS, DHCP, acting as exchange server
Both servers have a global catalogue. Both server have
the same DNS/DHCP settings
Click to expand...
 
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